ARM: dts: imx6ull-colibri: enable UHS-I for USDHC1

Allows to use the SD interface at a higher speed mode if the card
supports it. For this the signaling voltage is switched from 3.3V to
1.8V under the usdhc1's drivers control.
Signed-off-by: NIgor Opaniuk <igor.opaniuk@toradex.com>
Reviewed-by: NMarcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ul.dtsi

@@ -857,6 +857,8 @@
 					 <&clks IMX6UL_CLK_USDHC1>,
 					 <&clks IMX6UL_CLK_USDHC1>;
 				clock-names = "ipg", "ahb", "per";
+				fsl,tuning-step= <2>;
+				fsl,tuning-start-tap = <20>;
 				bus-width = <4>;
 				status = "disabled";
 			};
@@ -870,6 +872,8 @@
 					 <&clks IMX6UL_CLK_USDHC2>;
 				clock-names = "ipg", "ahb", "per";
 				bus-width = <4>;
+				fsl,tuning-step= <2>;
+				fsl,tuning-start-tap = <20>;
 				status = "disabled";
 			};
 

arch/arm/boot/dts/imx6ull-colibri-eval-v3.dtsi

@@ -145,13 +145,20 @@
 };
 
 &usdhc1 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
 	pinctrl-0 = <&pinctrl_usdhc1 &pinctrl_snvs_usdhc1_cd>;
-	no-1-8-v;
+	pinctrl-1 = <&pinctrl_usdhc1_100mhz &pinctrl_snvs_usdhc1_cd>;
+	pinctrl-2 = <&pinctrl_usdhc1_200mhz &pinctrl_snvs_usdhc1_cd>;
+	pinctrl-3 = <&pinctrl_usdhc1 &pinctrl_snvs_usdhc1_sleep_cd>;
 	cd-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
 	disable-wp;
 	wakeup-source;
 	keep-power-in-suspend;
 	vmmc-supply = <&reg_3v3>;
+	vqmmc-supply = <&reg_sd1_vmmc>;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
 	status = "okay";
 };

arch/arm/boot/dts/imx6ull-colibri.dtsi

@@ -545,6 +545,12 @@
 		>;
 	};
 
+	pinctrl_snvs_usdhc1_sleep_cd: snvs-usdhc1-cd-grp-slp {
+		fsl,pins = <
+			MX6ULL_PAD_SNVS_TAMPER0__GPIO5_IO00	0x0
+		>;
+	};
+
 	pinctrl_snvs_wifi_pdn: snvs-wifi-pdn-grp {
 		fsl,pins = <
 			MX6ULL_PAD_BOOT_MODE1__GPIO5_IO11	0x14